A novel device for measuring respirable dustiness using low-mass powder samples.
A novel device for measuring respirable dustiness using low-mass powder samples.
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DOI：
10.1080/15459624.2011.652061
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发表时间：
2012
影响因子：
2
通讯作者：
Ellickson D
中科院分区：
文献类型：
--
作者：
O'Shaughnessy PT;Kang M;Ellickson D
Respirable dustiness represents the tendency of a powder to generate respirable airborne dust during handling and therefore indicates the propensity for a powder to become an inhalation hazard. The dustiness of fourteen powders, including ten different nanopowders, was evaluated with the use of a novel low mass dustiness tester (LMDT) designed to minimize the use of the test powder. The aerosol created from 15-mg powder samples falling down a tube were measured with an aerodynamic particle sizer (APS). Particle counts integrated throughout the pulse of aerosol created by the falling powder were used to calculate a respirable dustiness mass fraction (D, mg/kg). An amorphous silicon dioxide nanopowder produced a respirable D of 121.4 mg/kg which was significantly higher than all other powders (p<0.001). Many nanopowders produced D values of that were not significantly different from large-particle powders such as Arizona Road Dust and Bentonite clay. In general, fibrous nanopowders and powders with primary particles > 100 nm are not as dusty as those containing granular, nano-sized primary particles. The method used here, incorporating an APS, represents a deviation from a standard method but resulted in dustiness values comparable to other standard methods.
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影响因子：
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作者：
Boundy, Maryanne;Leith, David;Polton, Thomas
通讯作者：
Polton, Thomas
影响因子：
15.1
作者：
Ansart, Renaud;de Ryck, Alain;Dodds, John A.
通讯作者：
Dodds, John A.
影响因子：
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作者：
Brouwer, Derk H.;Links, Ingrid H. M.;Christopher, Yvette
通讯作者：
Christopher, Yvette
影响因子：
2.1
作者：
Hamelmann, F;Schmidt, E
通讯作者：
Schmidt, E
影响因子：
--
作者：
Maynard, Andrew D.
通讯作者：
Maynard, Andrew D.